Media guide rail cap



FIG. 1 is a front perspective view of a media guide rail cap showing our new design.

FIG. 2 is a top plan view thereof.

FIG. 3 is a side plan view thereof.

FIG. 4 is a first end plan view thereof.

FIG. 5 is a second end plan view thereof; and,

FIG. 6 is a bottom plan view thereof. 

We claim the ornamental design for a media guide rail cap, shown. 